FR2613255A1 - DEVICE FOR INCREASING THE SPEED AND ENERGY OF PROJECTION OF PARTICLES OF A LIQUID JET AND ITS APPLICATION IN PARTICULAR IN THE SUGAR INDUSTRY - Google Patents

Abstract

THIS DEVICE CONSISTS OF A LIQUID JET GENERATOR 2 AND A CYLINDER 1 ROTATING AROUND THE AXIS PARALLEL TO ITS GENERATORS AND PLACED SO AS TO RECEIVE DURING ITS ROTATION AND ON ITS EXTERNAL PERIPHERAL SURFACE WHERE THE JET (S) ARE DESIRE TO INCREASE THE SPEED AND ENERGY OF THE PARTICLES. APPLICATION TO THE SUGAR INDUSTRY FOR THE SEPARATION OF SUGAR RICH AND POOR SEWERS DURING A CENTRIFUGATION-SPIN OPERATION.

Description

The present invention relates to a device for increasing the speed and

the projection energy of

  particles of a liquid jet and its application in particular

  particularly in the sugar industry.

  The velocity and the projection energy of the particles of liquid jets are sometimes insufficient

  for the desired result, since that insufficiency

  wind due to technological limitations related to devices used to generate such jets,

  that these are jets of liquid sprayed or not.

  However, the invention aims precisely at carrying the

  calf of energy of a given jet, whatever it may be, at a

  higher calf thanks to an essentially

  characterized in that it consists of a cylinder rotatably mounted about the axis parallel to its generatrices and arranged to receive during its rotation and on its outer peripheral surface the jet (s) of which one

  wants to increase the speed and energy of the particles.

  Of course, the desired result is obtained

  according to the invention, that the means of obtaining a jet of

  whether it is a nozzle, a nozzle or a liquid

  pulverized, or even a simple hole in a

  liquid under pressure, otherwise. Similarly, the jet of liquid can be directed orthogonally

  or obliquely on the surface of the moving cylinder.

  The jet source can also be fixed or mobile and the jet

  itself have a conical shape or be a flat stream.

  Those skilled in the art will readily understand that the

  lnner spinning communicates part of its energy drops of liquid it receives and returns to the outside with increased speed, this speed being all the more important that the peripheral speed of

this cylinder is high.

  Other features and benefits of

  the invention will become clearer from the description of

  1, a diagram illustrating the device according to the invention;

  FIG. 2 is a diagram illustrating a

  sorter-juicer from the sugar industry; and FIG. 3 is a diagram similar to that

  of Figure 2 illustrating the application of the invention.

  Referring to FIG. 1, the device se-

  the invention comprises a cylinder 1 rotatably mounted

  turn of its major axis X-Y and placed opposite at least one nozzle 2 (or other similar means) generating a

  jet 3 of liquid (sprayed or not), so as to receive

  see this jet on its peripheral surface, which jet will be returned by this surface in the form of a new jet

  whose particles will be animated with a higher velocity

  than the incident particles of jet 3. Well

  heard, as indicated above, this new

  will be all the more important as the speed of

  The pH of cylinder 1 will be high.

  In addition, the speed of particles or drops

  of increased liquid, their energy will also be increased.

  given the fact that it is well known that

  the kinetic energy of a moving body is proportionally

squared of its speed.

  This invention finds particular application

  particularly interesting in the sugar industry. We

  In fact, it is well known that, in sugar factories, the crys-

  tallied with its mother liquor in centrifugal dryers

operating discontinuously.

  A typical cycle typical of this industry involves starting the centrifuge, loading it massively, accelerating the rotation of the "basket" of the machine, the operations of clearing the sugar contained in the basket with water and / or steam, stopping the

  machine and its emptying of sugar. Each cycle lasts

minutes.

  The mother-water of crystallization which separates from sugar is viscous, because it still contains a lot of sugar and the other "non-sugar" materials. We denominate

  in the profession this mother-water "poor sewer".

  By cons, what is called "rich sewer" is constituted by the liquid obtained at the end of the spinning operation by the clearings of sugar to water and to the

  steam. These clearings clean the sugar in the storage

  residual mother water; in addition, they solubilize sugar that was crystallized. The "rich sewers" are usually separated from the "poor sewers"; the "rich sewage resulting from sugar melted in the clearing water

  are generally recycled, while the "poor sewers"

"" are treated separately.

  The "poor sewers" and "rich ones" descend

  along the wall of the fixed skirt surrounding the basket.

  The diagram of the appended FIG. 2 illustrates this

  operational phase of the sugar industry. On this

  the reference M designates the motor driving

  the basket la of a centrifugal wringer with its fixed skirt 2a ending with its ego ts evacuation duct E. The ramp for water clearing is

  designated by reference R with its adjusters

floor or nozzles 5.

  In practice, the separation of "rich sewers"

  and "poor sewers" is difficult to achieve. Indeed-

  fet, we see that part of the "poor sewer" that has

  been projected by the rotation of the basket on the inside

  dull of the fixed skirt 2a still adheres to it at the time of the clearings. We know that this fraction of "poor sewer"

  will take a long time to flow because of its viscosity.

  It will be driven by subsequent clarifications and come

pollute the "rich sewers".

  We then obtain a partial recovery of these two sewers with the consequence that their separation will always be a compromise, each sewer containing more or less

from the other sewer.

  The present invention can remedy this state

  in this sense, that applied to the

  described above, the system according to the invention makes it possible to clean the residues "of poor sewage", while

  avoiding their pollution by the "rich egos".

  The present invention will find its best

  plication by placing on the skirt 2a and inside thereof a series of nozzles 6 propelling jets of water sprayed or not on the outer face of the basket of a centrifuge of the type described above, these jets being oriented and distributed so as to water the entire surface

external of this basket.

  According to an advantageous procedure,

  the usual cycle of rotation of said basket by making, before performing the clearings, a short injection of water sprayed by these nozzles or nozzles 6. This water spray is rejected at high speed by the basket in rotation and it comes to hit the inner face of the skirt 2a. The "poor ego" resulting from the immediately preceding centrifugation operation is thus diluted rapidly, the water mixing intimately with the "poor sewer" thanks to the kinetic energy of the jets in question, which facilitates its flow. through the evacuation duct E. The inner face of the skirt 2a is thus washed with a minimum amount of water which will, therefore, be directed towards

the "poor egos".

  Thus, thanks to the present invention, we succeed in improving the separation of "poor sewers" and "rich sewers", the "poor sewers" being poorer, because not enriched in "rich egot" and "rich sewers" being richer, since they contain less "poor sewage" The "rich sewage" is thus less polluted, there is then a spending more clearing water

  weak than by the usual technique.

  Indeed, these improvements have important consequences on the quality of the products, on the yield and the flow rate of the crystallization plant, since they are reflected step by step since the concentration of the cooked mass up to each of the products from of

the making.

  It is understood that this is only an example and that the system according to the invention is applicable to any

  industry using the principle of solid separation

  liquid by centrifugation, in all cases where

need to clean the fixed skirt.

  It goes without saying that the present invention has been described only by way of illustration and in no way limiting and

  that any modification, in particular at the level of equiva-

  can be made without leaving the

its frame.

Claims (2)

  1. Device for increasing the speed and   the projection energy of the particles of a jet of li-   quide, characterized in that it consists of a   positive liquid jet generator (2) and a cylinder   (1) rotatably mounted around the axis parallel to its genera-   and placed so as to receive during its rotation and on its outer peripheral surface the jet (s)   whose speed and energy we wish to increase. ticles.   2. Application of the device according to the claim   1 to the sugar industry, the application of which is sprayed on the outer peripheral surface of the basket (la) of a centrifuge or jets of water (6), or   which are oriented and distributed on the peripheral surface   inner rim of the fixed skirt (2a) of said centrifuge.